Process for producing high-purity magnesium oxide by membrane-based oxygen-enrichment and oxygen enriched combustion

Abstract

The invention discloses a process for producing high-purity magnesium oxide by membrane-based oxygen-enrichment and oxygen enriched combustion, which comprises a shaft kiln, wherein the inner wall ofthe kiln is transversely connected with a nozzle of which the inlet end is connected with a mixing component through a conduit, and the inlet end of the mixing component is connected with a membrane oxygenation component and a fuel pipe respectively. In the process for producing high-purity magnesium oxide by membrane-based oxygen-enrichment and oxygen enriched combustion, oxygen and oil enter into the mixing chamber B in the tank of the mixing component for preliminary mixing, the initially mixed oil gas enters the mixing chamber A through the communicating pipe, and then blows to rotate theblades when flowing to enable a further mixing by the blades, and finally the oil and gas enter into the mixing chamber B for the final mixing. The multi-step mixing greatly enhances the mixing effectof oil and gas, so as to ensure the combustion supporting effect of high purity magnesium oxide and meet the actual use demand during processing.

Description

technical field [0001] The invention relates to the technical field of material roasting, in particular to a process mechanism for oxygen production by membrane method, oxygen-enriched combustion-supporting roasting and high-purity magnesium oxide. Background technique [0002] Membrane separation air separation technology is a new high-tech technology in foreign countries in the 1980s. It belongs to polymer material science. Industrially developed countries call membrane method oxygen enrichment technology a resource-based creative technology. It is the third generation of gas with the most development and application prospects. Separation technology, Japan has carried out oxygen-enriched application tests on different occasions using gas, oil, and coal as fuel, and came to the following conclusions: using 23% oxygen-enriched combustion can save energy by 10-25%, and using 25% oxygen-enriched combustion It can save energy by 20-40%, and it can save energy by 30-50% with 27%...

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Problems solved by technology

[0005] When using the oxygen produced by the membrane method to burn high-purity magnesia, the most important part is whether the oil-gas mixed liquid ejected from the nozzle is uniform. Improving the uniformity of oil-gas mixing will improve the combustion-supporting effect on high-purity magnesia, but The existing mixing equipment is equipped with a baffle in the ordinary mixing chamber, and the oil and gas are mixed through the design of the baffle, but the mixing effect of the oil and gas after this mixing method is poor, and it cannot meet the actual use requirements during processing

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